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논문 기본 정보

자료유형
학술저널
저자정보
Wang, Zhengwen (State Key Laboratory of Vegetation & Environmental Changes, Institute of Botany, Chinese Academy of Sciences) Xu, Ankai (National Laboratory of Grassland Ecological Engineering, Northeast Normal University) Zhu, Tingcheng (National Laboratory of Grassland Ecological Engineering, Northeast Normal University)
저널정보
한국식물학회 식물학회지 식물학회지 제51권 제2호
발행연도
2008.1
수록면
102 - 107 (6page)

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We surveyed the bud demography of Leymus chinensis L. plants along a soil-moisture gradient that was caused by a flood in 1998 on the Song-nen Plain in northeastern China. The number of vegetative buds per ramet was influenced by soil water content, with regression curves being quadratic and the opening of the parabola pointing downward. In addition, the optimum regression models for the numbers of rhizomatous buds and tiller buds relative to soil water resulted in al quadratic parabola and exponential curve, respectively. Vegetative buds flourished between August and October, with plants producing more of those buds on flooded plots than on control sites. The number of rhizomatous buds per ramet was much higher than for tiller buds throughout most of the growing season, and production of the former was more apt to be affected by soil water status. This observed superiority of rhizomatous bud production was thought to be a consequence of the whole-plant adjustment that was stimulated by an abnormally high moisture content. It could also be interpreted as a strategy for "escape" from disadvantageous overly wet conditions. Moreover, the position-based preference for bud emergence along the ramets could be an underlying mechanism for selective ramet placement.

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